JP5288826B2 - 有機半導体素子及びその製造方法 - Google Patents
有機半導体素子及びその製造方法 Download PDFInfo
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- JP5288826B2 JP5288826B2 JP2008041453A JP2008041453A JP5288826B2 JP 5288826 B2 JP5288826 B2 JP 5288826B2 JP 2008041453 A JP2008041453 A JP 2008041453A JP 2008041453 A JP2008041453 A JP 2008041453A JP 5288826 B2 JP5288826 B2 JP 5288826B2
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- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
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- 150000002739 metals Chemical class 0.000 description 1
- 229920003145 methacrylic acid copolymer Polymers 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
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- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 1
- KKFHAJHLJHVUDM-UHFFFAOYSA-N n-vinylcarbazole Chemical class C1=CC=C2N(C=C)C3=CC=CC=C3C2=C1 KKFHAJHLJHVUDM-UHFFFAOYSA-N 0.000 description 1
- 150000002790 naphthalenes Chemical class 0.000 description 1
- YTVNOVQHSGMMOV-UHFFFAOYSA-N naphthalenetetracarboxylic dianhydride Chemical compound C1=CC(C(=O)OC2=O)=C3C2=CC=C2C(=O)OC(=O)C1=C32 YTVNOVQHSGMMOV-UHFFFAOYSA-N 0.000 description 1
- 150000002791 naphthoquinones Chemical class 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- HCIIFBHDBOCSAF-UHFFFAOYSA-N octaethylporphyrin Chemical compound N1C(C=C2C(=C(CC)C(C=C3C(=C(CC)C(=C4)N3)CC)=N2)CC)=C(CC)C(CC)=C1C=C1C(CC)=C(CC)C4=N1 HCIIFBHDBOCSAF-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- CLYVDMAATCIVBF-UHFFFAOYSA-N pigment red 224 Chemical compound C=12C3=CC=C(C(OC4=O)=O)C2=C4C=CC=1C1=CC=C2C(=O)OC(=O)C4=CC=C3C1=C42 CLYVDMAATCIVBF-UHFFFAOYSA-N 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920000553 poly(phenylenevinylene) Polymers 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
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- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
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- 229920000123 polythiophene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 229940090181 propyl acetate Drugs 0.000 description 1
- 235000019423 pullulan Nutrition 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000003233 pyrroles Chemical class 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
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- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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- YNHJECZULSZAQK-UHFFFAOYSA-N tetraphenylporphyrin Chemical compound C1=CC(C(=C2C=CC(N2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3N2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 YNHJECZULSZAQK-UHFFFAOYSA-N 0.000 description 1
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Images
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- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Thin Film Transistor (AREA)
Description
以下の実施例において用いる共重合体を以下のようにして合成した。
図6は、本実施例において作製した電界効果トランジスタを示す断面図である。
表1に示す共重合化率を有する共重合体を用いる以外は、実施例1と同様にして、実施例2〜15及び比較例1〜3の電界効果トランジスタを作製した。なお、比較例1においては、共重合化率0のものを用いている。従って、比較例1で用いた高分子は、共重合体ではなく、メタクリル酸メチル単独の重合体である。
HPパラメータアナライザ(HP4156C)を用いて、移動度及びオン/オフ比を求めた。
Id=1/2×(L/W)×Ci×μ×(Vg−Vth)2 ・・・式(1)
L: ゲート長(cm)
W: ゲート幅(cm)
Ci:単位面積あたりの静電容量(C/cm2)
μ:移動度(cm2 /Vs)
Vg:ゲート電圧(V)
Vth:ゲート電圧しきい値(V)
移動度及びオン/オフ比を表1に示す。
共重合化率が0.02である共重合体を用い、高分子層の膜厚を表2に示すように、0.5nm〜65nmの範囲で変化させ、それ以外は実施例1と同様にして電界効果トランジスタを作製した。なお、実施例20は、実施例1と同様の電界効果トランジスタである。
高分子層を形成せずに、ゲート電極の上に直接有機半導体層を形成する以外は、実施例1と同様にして電界効果トランジスタを作製した。従って、本比較例は、高分子層の膜厚が0nmに相当するものである。
ゲート電極としてSi膜を形成し、ゲート絶縁膜として、SiO2を形成する以外は、上記実施例1と同様にして電界効果トランジスタを作製した。作製した電界効果トランジスタについて、上記と同様にしてトランジスタ特性を評価したところ、移動度は0.2cm2/Vsであり、オン/オフ比は2×106であった。
共重合化率が0であるポリメタクリル酸メチルを用いて高分子層を形成する以外は、上記実施例31と同様にして電界効果トランジスタを作製した。作製した電界効果トランジスタについてトランジスタ特性を評価したところ、移動度は0.08cm2/Vsであり、オン/オフ比は2×106であった。
ポリメタクリル酸メチルとポリビニルフェノールの共重合体(PMMA−PVP)を用いて高分子層を形成する以外は、実施例1と同様にして電界効果トランジスタを作製した。
2…ゲート電極
3…ゲート絶縁膜(絶縁層)
4…高分子層
5…有機半導体層
6…ソース電極
7…ドレイン電極
8…保護層
9…フロティーング電極
Claims (4)
- 前記高分子層の厚みが、1〜50nmの範囲内であることを特徴とする請求項1に記載の有機半導体素子。
- 前記有機半導体素子が、ゲート電極と、半導体層と、前記ゲート電極及び前記半導体層の間に設けられるゲート絶縁膜と、前記半導体層と接するように設けられるソース電極及びドレイン電極とを備える電界効果トランジスタであって、
前記ゲート絶縁膜が前記絶縁層であり、前記半導体層が前記有機半導体層であることを特徴とする請求項1または2に記載の有機半導体素子。 - 請求項1または2に記載の有機半導体素子を製造する方法であって、
前記絶縁層を形成する工程と、
前記絶縁層の上に前記共重合体を含有した溶液を塗布して前記高分子層を形成する工程と、
前記高分子層の上に前記有機半導体層を形成する工程とを備えることを特徴とする有機半導体素子の製造方法。
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